Preparation method of special low-smoke halogen-free flame retardant cladding layer material for butterfly-shaped introduction cable of access network

摘要: The invention provides a preparation method of special low-smoke halogen-free flame retardant cladding layer material for butterfly-shaped introduction cable an access network. comprises the following steps of: (1) proportioning components in parts by weight: 5-15 high-fused ethylene-vinyl acetate copolymer, low-fused polyethylene, 55-65 fire retardant, 10-20 compatilizer, 2-3 ultra-high molecular weight silicone, and 0.3-0.8 part anti-oxygen; adding milling machine mixing 8-12 minutes, discharging when temperature reaches 135-150 DEG C; (2) feeding mixture into double-screw-rod extruding machine, plastifying through double screw rods, pelleting single rod, wherein all sections section has 90-110 C, transportation 120-130 130-140 head 135-145 is carried out using air cooling hot cutting process; finally drying made particles to obtain finished product. manufactured used as rubber-insulated optical cable, advantages good flowing property, binding property product quality. Furthermore, attenuation degree can be greatly reduced.